Uromyces ciceris-arietini

The chickpea rust ( Uromyces ciceris - arietini ) is a Ständerpilzart from the order of rust fungi ( Pucciniales ). The fungus is an endoparasite of chickpea ( Ciceris arientinum ). Symptoms of infestation by the way are rust spots and pustules on the leaf surfaces of host plants. It is distributed in Eurasia, Central America and Africa.

Features

Macroscopic characteristics

Uromyces ciceris - arietini with the naked eye can be seen only on the basis of the projected on the surface of the host spore deposits. They grow in clusters that appear as yellowish to brown spots and pustules on the leaf surfaces.

Microscopic characteristics

The mycelium of Uromyces ciceris - arietini grows intercellular as with all Puccinia species and forms Saugfäden that grow in the storage tissues of the host. The spermogonia and Aecien the type are unknown. The growing on both sides of the host leaves, on stems and leaf spindles uredia of the fungus are cinnamon brown. Your cinnamon to golden brown uredospores are 23-27 × 18-22 microns in size, usually breitellipsoid and stachelwarzig. Growing on leaves, stems and leaf spindles Telien the type are chocolate brown, uncovered and powdery. The Maroon teliospores are single-celled, usually globose to broadly ovate, 20-25 × 18-20 stachelwarzig and most microns in size. Your handle is colorless.

Dissemination

The known distribution area of Uromyces ciceris - arietini includes Central America, Europe and India.

Ecology

The host plant of Uromyces ciceris - arietini is the chickpea ( Cicer arietinum ). The fungus feeds on the present in storage tissues of the plant nutrients, its spores bearing later break through the leaf surface, and put spores free. The way passes through a likely macrocyclic development cycle, of which only uredia and Telien and their host are known so far. Whether it takes place a change of host, therefore can not be said.

Importance

The chickpea rust is a serious pest in chickpea cultivation va in countries like Mexico, Italy and Australia. The fight takes place mostly with fungicides such as Propyconazol. Lately also resistant varieties are being sought. It was also found that the infestation is lower when the sowing is done in the winter rather than in spring because of the rust higher temperatures are preferred.